Dobby for looms.



N0 MODEL.

J. A. CLARK.

DOBBY FOR LO0MS..

APPLICATION IILED JUNE 20,1903.

2 SHEETS-SHEET 1.

. I z 1' 8 .17' T PATENTED OCT. 13, 190B.

No. 741,225. PATENTED OCT. 13, 1903. J. A. CLARK.

DOBBY FOR LOOMS.

APPLICATION FILED JUNE 20,1903.

N0 MODEL. 2 SHEETS-SHEET 2.

UNITE STATES Patented October 13, 1903.

PATnT JOHN A. CLARK, OF WORCESTER, MASSACHUSETTS, ASSIGNOR TO CROMPTON &KNOWLES LOOM WORKS, OF l/VORCESTER, MASSACHUSETTS, A COR-.

PORATION OF MASSACHUSETTS.

DOB BY FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 741,225, dated October13, 1903. Application filed June 20,1903. Serial No. 162.306. (Nomodel.)

To all whom it may concern.-

Be it known that I, JOHN A. CLARK, a citi and more particularly toimprovements in the IO construction of a dobby as now ordinarily made.

The object of my invention is to make a dobby of improved constructionand in which some of the parts may be readily and quickly I taken apartand put together and individually detached without removing the otherparts.

My invention consists in certain novel features of construction of myimprovements in a dobby, as will be hereinafter described.

Referring to the drawings, Figure 1 is a side view of a dobby embodyingmy improvements. Fig. 2 is a central vertical section through thedobby-frame and parts shown in Fig. 1. Fig. 3 is a vertical sectiontaken at a point indicated by line 3 3, Fig. 1, looking in the directionof arrow at, same figure. Fig. 1 is a plan view of the parts shown inFig. 2 looking in the direction of arrow 6, same figure.

In the accompanying drawings, 1 is the dobby-frame, on which the severalparts of the dobby mechanism are supported, as is customary.

2 represents the harness jacks or levers, pivotally supported at theirlower ends on the transverse rod 3. The levers 2 have a slot 2 therein,through which extends a stationary transverse rod 1 to limit the pivotalmotion of the levers 2 in the ordinary way.

5 represents rocker-levers fast on the ends of the rocking shaft 6,mounted in bearings in the frame 1.

A rocking motion is communicated to the shaft 6 through connections fromsome driven part of the loom to the arm 6, fast on one end of the shaft6.

The rocking levers 5 are connected at their upper and lower ends throughlinks 7 with the upper and lower lifter-bars 8, which have areciprocating motion in slots 1 in the frame 1.

Each harness lever or jack 2 has pivotally supported thereon a connector9, and to the upper end of each connector 9 is pivotally attached anupper hook 10, and to the lower end of each connector 9 is pivotallyattached a lower hook 11.

The two transverse bars 2, which are preferably inclined toward one end,as shown in Fig. 4, act as stops for the upper and .lower ends of theconnectors 9.

12 is the pattern cylinder or barrel, having pins 12 thereon to engagewith and operate the indicator-levers.

All of the above parts may be of the ordinary construction.

I will now describe my improvements.

I provide a series of individually-removable and vertically-extendingrods or bars 13, between which the upper and lower hooks 10 and 11extend and are guided.

transverse bar 14, which is provided with a division 14. to space thelower ends of the rods 13 and form individual recesses 11 for said rods.In connection with the transverse supporting-bar 11 is a secondtransverse bar 11 which extends parallel with the bar 14 and ispreferably made integral therewith, and in this instance has a series ofrecesses thereinone for each of the guide-rods 13 to keep the lower endsof the rods 13 in the recesses in the supporting-bar 14..

The transverse bars 14 and 14, preferably made integral, are securedbetween the side frames of the dobby by bolts 15, extending throughprojections on the ends of the transverse bar 11, as shown in Fig. 3.

At ransverse guide-bar 16 extends between the side frames of the dobbyand is secured at its ends by bolts 17, as shown in Fig. 3. Theguide-bar 16 is provided with a series of The lower v ends of theguide-rods 13 are supported on a holes 16 therein, throughwhich theupper ends of the guide-rods 13'extend, as shown.

Extending over the guide-bar 16 and over the upper ends of theguide-rods 13 is a transverse bar 18, which preferably has a lip on oneedge 18 and is pivotally attached at one end by a bolt 19 upon the upperpart of the frame of the dobby. The other end of the bar 18 has an openend slot, 18 therein to receive a bolt 20, which is screwed down to holdthe bar 18 in place over the upper ends of the guide-rods 13 to holdsaid guide-rods in position, as shown in Fig. 2.

said rods or bars, as shown in Fig. 4.

Extending over the pattern barrel or cylinder 12 are a series of patternindicators or levers 21, pivotally supported on a transverse rod 22 andresting at their outer ends on a stop-bar 23 and guided between verticalpins or guides 24 on said stop-bar 23 in the ordi nary way. In thisinstance each of the indicator-levers 21 is provided at its inner endwith an upturned portion 21,which is adapted to engage directly with thelower hook 11, and each of the indicator-levers 21 is also provided atits inner end with a downward p'rojection 21", having a socket or recess21 therein to hold and support the lower end of a lifting wire or rod25, which at its upper end extends through one of the recesses 16 of thetransverse guide-bar 16 and is then bent over and extends through theadjoining recess 16 in said bar 16, as shown in Fig. 3. On the hook orbent portion of the guide wire or rod 25 is preferably supported a smallroll 25, upon which rests one of the upper hooks 10, as shown in Fig. 3.i

The lower transverse bar 14: has a series of divisions 14;on its outersurface, forming recesses 14" (see Fig. 3) to receive and guide theupturned ends 21 of the indicator-levers 21. (See Fig. 2.)

Extending below the transverse bar 14 is a transverse bar 14 whichispreferably made integral with the transverse bars 14 and 14. The bar 14acts as a stop-bar for the inner ends of the indicator-levers 21 toprevent the outer ends of said indicator-levers being raisedsufficiently to allow the lower ends of the lifting rods or wires 25being displaced from the sockets 21 on the inner ends of saidindicator-levers.

The advantages of my improvements will be readily appreciated by thoseskilled in the art.

By means of the guide wires or rods 13 for the upper and lower hooks 10and 11 and the removable bar 18, extending over the upper ends of saidguide-rods, any one of the upper or lower hooks 10 and 11 can be readilyand freely lifted at their free ends for any purpose. The several partsof the dobby mechanism can be readily assembled and taken apart.

It will be understood that the details of construction of myimprovements may be varied, if desired.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, isg 1. In a dobby, the combination. with a barextending transversely through the lower part of the dobby-frame, andhaving a series of recesses therein, and a second bar extendingtransversely through the upper part of the dobby-frame, and having aseries of openings therein, of a series of removable guide rods or bars,supported at their lower ends in the recesses on the lower transversebar and extending at their upper ends through the openings in theuppertransverse bar, substantially as shown and described. 7

2. In a dobby, the combination with a bar extending transversly throughthe lower part of the dobby-frame, and having a series of recessestherein, and a second bar extending transversely through the upper partof the dobby-frame, and having a series of openings therein, of a seriesof removable guide rods or bars, supported at their lower ends in therecesses on the lower transverse bar, and extending at their upper endsthrough the openings in the upper transverse bar, and a removable plateextending over the upper ends of said guide rods or bars, substantiallyas shown and described.

3. In a dobby, the combination with a bar extending transversely throughthe dobbyframe at the lower part thereof, and having a series ofrecesses therein, and a second retaining-bar extending transverselythrough the lower part of the dobby-frame, above the first-mentionedbar, and a third bar extending transversely through the upper part ofthe dobby-frame, and having a series of openings therethrough, of aseries of removable wires or rods, between which the hooks extend,supported at their lower ends in the recesses on the lower transversebar, and extending at their upper ends through the openings in the uppertransverse bar, and a removable plate extending over the upper ends ofsaid guide bars or rods,substantially as shown and described.

4:. In a' dobby, the combination with the pivoted indicator-levers,having upwardly-extending inner ends to engage the lower hooks, and saidhooks, and also downwardly-extending portions provided with sockets toreceive the lower ends of the lifting-wires of the upper hooks, and saidlifting wires and hooks, of a bar extending transversely through thelower part of the dobby, and having divisions thereon forming recessesto receive the upwardly-extending portions of the indicatorlevers, andguide the same, substantially as shown and described.

5. In a dobby, the combination with the pivoted indicator-levers, havingupwardly-extending inner ends to engage the lowerhooks, and said hooks,and also downwardly-extend- IEO ing portions provided with sockets toreceive the lower ends of the lifting-Wires of the upper hooks, and saidlifting Wires and jacks,- of a bar extending transversely through the 5lower part of the dobby, and having divisions I tioned bar, extendingbelow the downwardly- I0 thereon forming recesses to receive the rip-iJOHN CLARK projecting portions of said indicator-levers, to limit thetilting motion of said levers, substantially as shown and described.

ward1y-extending portions of the indicator- Witnesses: levers, and guidethe same, and a second J. O. DEWEY, vtransverse bar, integral With thefirst-men- M. HAAS.

